Add Claude Code GitHub Workflow

[cedarconnor]

🤖 Installing Claude Code GitHub App

This PR adds a GitHub Actions workflow that enables Claude Code integration in our repository.

What is Claude Code?

Claude Code is an AI coding agent that can help with:

• Bug fixes and improvements
• Documentation updates
• Implementing new features
• Code reviews and suggestions
• Writing tests
• And more!

How it works

Once this PR is merged, we'll be able to interact with Claude by mentioning @claude in a pull request or issue comment.
Once the workflow is triggered, Claude will analyze the comment and surrounding context, and execute on the request in a GitHub action.

Important Notes

• This workflow won't take effect until this PR is merged
• @claude mentions won't work until after the merge is complete
• The workflow runs automatically whenever Claude is mentioned in PR or issue comments
• Claude gets access to the entire PR or issue context including files, diffs, and previous comments

Security

• Our Anthropic API key is securely stored as a GitHub Actions secret
• Only users with write access to the repository can trigger the workflow
• All Claude runs are stored in the GitHub Actions run history
• Claude's default tools are limited to reading/writing files and interacting with our repo by creating comments, branches, and commits.
• We can add more allowed tools by adding them to the workflow file like:

allowed_tools: Bash(npm install),Bash(npm run build),Bash(npm run lint),Bash(npm run test)

There's more information in the Claude Code action repo.

After merging this PR, let's try mentioning @claude in a comment on any PR to get started!

[claude]

Code Review: Claude Code GitHub Workflow Integration

Overview

This PR adds two GitHub Actions workflows to integrate Claude Code into the repository. The implementation is well-structured and follows GitHub Actions best practices.

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Positive Aspects

Code Quality

• Clean YAML structure with good formatting
• Helpful commented-out examples for optional features
• Proper minimal permissions with correct scoping
• Uses official actions (actions/checkout@v4, anthropics/claude-code-action@v1)

Security

• Correct secret handling via GitHub secrets
• Permission scoping with read-only access where appropriate
• No hardcoded credentials
• Smart conditional execution filtering

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Critical Issues (Must Fix)

1. Missing Write Permission (.github/workflows/claude-code-review.yml:23-25)

Issue: The workflow will FAIL when trying to use gh pr comment because it lacks write permissions.

Current permissions only grant pull-requests: read, but posting comments requires pull-requests: write.

Fix: Change to pull-requests: write

Severity: HIGH - Will cause workflow failures

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2. Insufficient Allowed Tools (.github/workflows/claude-code-review.yml:56)

Issue: The review workflow cannot read files or analyze code!

Current allowed tools only include gh commands. Claude cannot:

• Read code files in the PR
• Read CLAUDE.md (mentioned in the prompt)
• Use Glob/Grep to search codebase
• Analyze actual implementation

Fix: Add file access tools:

claude_args: '--allowed-tools "Read,Glob,Grep,Bash(gh issue view:*),Bash(gh search:*),Bash(gh issue list:*),Bash(gh pr comment:*),Bash(gh pr diff:*),Bash(gh pr view:*),Bash(gh pr list:*)"'

Severity: HIGH - Cannot perform meaningful code review

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Important Issues (Should Fix)

3. Inconsistent Permissions Between Workflows

The two workflows have different permissions (claude.yml has actions: read, claude-code-review.yml does not).

Recommendation: Both should have consistent permissions including actions: read for CI results.

Severity: MEDIUM

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4. No Timeout Configured

Neither workflow specifies a timeout. If Claude encounters an issue, workflows could run for hours.

Recommendation: Add timeout-minutes: 15 (or 20 for general tasks)

Severity: MEDIUM

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Low Priority Suggestions

• Add failure notifications for better UX
• Consider explicit permission checks for security
• Add workflow status badges to README
• Add inline comments explaining why each permission is needed

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Recommendation

Request Changes: The workflows need the two critical fixes above to function:

1. Add pull-requests: write permission to claude-code-review.yml
2. Add Read,Glob,Grep to allowed tools in claude-code-review.yml

The PR is otherwise well-designed with excellent documentation. Once these are fixed, it will be ready to merge!